Control valves
Control valves
Kv (Cv US) values
For conversion: Cv (UK) = Kv x 0.963
2 stage perforated trim (continued)
Trim
DN32 DN40 DN50 DN65 DN80 DN100 DN125 DN150 DN200 DN250 DN300
Full port
Equal percentage
16
(18.5)
16
(18.5)
16
(18.5)
44
(51)
44
(51)
63
(73)
125
(145)
160
(185)
280
(324)
305
(353)
386
(446)
Full port
Linear
16
(18.5)
16
(18.5)
16
(18.5)
50
(58)
50
(58)
63
(73)
125
(145)
160
(185)
280
(324)
305
(353)
436
(504)
Reduction 1
Equal percentage
and Linear
10
(11.6)
10
(11.6)
10
(11.6)
36
(42)
36
(42)
36
(42)
100
(116)
100
(116)
160
(185)
280
(324)
305
(353)
Reduction 2
Equal percentage
and Linear
6.3
(7.3)
6.3
(7.3)
6.3
(7.3)
25
(29)
25
(29)
25
(29)
63
(73)
63
(73)
100
(116)
160
(185)
280
(324)
Reduction 3
Equal percentage
and Linear
4
(4.6)
4
(4.6)
4
(4.6)
16
(18.5)
16
(18.5)
16
(18.5)
36
(42)
36
(42)
63
(73)
100
(116)
160
(185)
Reduction 4
Equal percentage
and Linear
10
(11.6)
10
(11.6)
10
(11.6)
25
(29)
36
(42)
63
(73)
100
(116)
Reduction 5
Equal percentage
and Linear
6.3
(7.3)
6.3
(7.3)
36
(42)
63
(73)
Reduction 6
Equal percentage
and Linear
36
(42)
TI-S24-59 CH Issue 4
Page 7 of 9
Balanced and Multi-stage Trim Options for Spira-trol
TM
Two-port Control Valves
4.1.66
